Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) "RAN, Luyun","A survey method of Second Language Acquisition Research to measure the acquisition situation of ""True"" Centering on both surface answer and internal understanding",一橋日本語教育研究,24344788,ココ出版,2019-03-31,7,,43-56,https://cir.nii.ac.jp/crid/1050568617183518336,